How do the Euro 2020 last 16 qualifying groups work?
With six groups in total, the six winners and six runners-up all reach the last 16, so too the four best third-placed finishers. Group winners will not meet in the last 16, while it gets a little complicated regarding who the third-placed teams face if they qualify. An explanation can be found on Page 19 of Uefa’s Euro 2020 regulations here.
What’s new at UEFA Euro 2020?
The journey to UEFA EURO 2020 has begun with a first official speech from new UEFA President Aleksander Čeferin, and the unveiling of a new identity that celebrates football’s unifying strengths. Live20/08/2019 Official Hospitality: discover the 2020 Club! UEFA EURO 2020 Hospitality Packages are available now. Live20/09/2016
What does Euro 2020 stand for?
The 2020 UEFA European Football Championship, commonly referred to as UEFA Euro 2020 (stylised as UEFA EURO 2020) or simply Euro 2020, was the 16th UEFA European Championship, the quadrennial international men’s football championship of Europe organised by the Union of European Football Associations (UEFA). 
Why did UEFA change the format at Euro 2016?
Going into the final round of group fixtures at Euro 2016, every nation but Ukraine were able to still qualify for the last 16, which will have given Uefa a level of vindication for the format change as it reduced the amount of dead-rubber matches.